Luminosa Caelum, named from Latin for 'luminous sky,' is a bioluminescent butterfly with translucent, pale blue wings up to 10 cm spanning alpine habitats. Its wings show delicate veins and glowing orange-yellow spots on the lower hindwings, emitting blue-green light (420-490 nm). The species has a slender, 0-2 g body with fine magenta-tipped antennae. Inhabiting cool Alpine meadows (15-25°C), it exhibits rhythmic gliding flight to conserve energy at high altitudes. Taxonomically, it belongs to the Aurorae Lepidoptera cluster, a protected group of 20 montane bioluminescent moths and butterflies. Bioluminescence likely aids intra-species communication and predator deterrence, exemplifying alpine biodiversity and evolutionary adaptation.